The dlmlnudve of a sewer. Callis, Sew. (80,) 100. In modern law, an open ditch or conduit designed to allow the passage of water from one point to another ln a certaln dlrectlon, whether for purposes of dralnage, lrrlgatlon, or otherwise, war-ren v. Henly, 31 Iowa, 31; willis v. State, 27 Neb. 98, 42 N. W. 920